Development of Interactive Learning Multimedia Based on Problem-Based Learning to Improve Students' Learning Achievement in The Subject of Lathe Machinery Engineering in Grade XII of National Vocational School Berbah

This research aims to: determine (1) effectiveness, (2) feasibility, (3) produce interactive learning multimedia, (4) determine the application of interactive learning multimedia, and (5) determine the increase in student learning achievement after using interactive learning multimedia based on problem-based learning in lathe machining engineering subjects for class XII students majoring in Machining Engineering at National Vocational School Berbah. This research uses research and development. The development model that will be used in this research is ADDIE, which consists of the Analysis, Design, Development, Implementation, and Evaluation. The experimental design used was a pretest-posttest control group design. Based on the research results, it was concluded that: (1) The product was developed using articulate storyline 3 and contained the syntax of the problembased learning model and indicators of achievement of competency in learning lathe machining techniques, (2) The results of material expert validation were in the Good category (64), results media expert validation is in the Very Good category (86), it can be concluded that the product in this study is said to be suitable for use in terms of material and media, (3) Based on the results of individual trials, Good results were obtained (64.67), group trials Small results obtained Good (63.9), and field trials obtained Good results (62.53), it can be concluded that the product in this research is said to be practical, (4) Based on the evaluation results in class XII lathe machining engineering subjects for the experimental class there was a percentage increase of 53% (60.24 - 81.12), while in the control class there was a percentage increase of 20% (40.60 - 52.70), so it can be concluded that the percentage increase in learning achievement for the experimental class was greater than that of the experimental class. control. Based on the results of the development, it is recommended that productive machining teachers can use this learning media for learning activities and during the learning process teachers continue to accompany their students in learning.